Cultivator.



J. F. SHEAHAN.

No. 643,3sl. v Patented Apr. 24, |900;4

cuLTlvATon.

(Application med Dec. 2e, 1a99.)'

(No Model.)

SNITED STATES PifrnrrrN OFFICE.

JOHN F. SHEAHAN, OF HAMILTON, OHIO, ASSIGNOR TO THE H. P. DUSOHERCOMPANY, OF SAME PLACE.

ou L'rivATo R.A

SPECIFICATION forming part of Letters Patent No. 648,361, dated April24, 1900. Application ma December 26,1899. serial No. 741,556. et)modern T0 all whom t may concern.-

Be it known that I, JOHN F. SHEAHAN, a citizen of the United States, anda resident of Hamilton, Ohio, have invented certain new and usefulImprovements in Cultivators, of which the following is a specification.

My invention relates to cultivators of the class known as diskcultivators; and the objects of my improvement are to provide means tosimultaneously adj ust the disk gangs laterally on the frame and indifferent vertical angles and to provide the clamping-nuts withcam-wrenches. These objects are attained in the following-describedmanner, as illustrated in the accompanying drawings, in which-- Figure 1is a rear elevation of one side of a cultivator embodying myimprovement; Fig. 2, a side elevation of the shank, with parts insection; Fig. 3, the plan of a camwrench in clamped position on thecontiguous parts, and Figs. 4 and 5 details of construction.

In the drawings, 6 represents one side of a cultivator frame or archmounted on groundwheels 7 by means of crank-axles S and verticallyadjustable by means of hand-lever 9. Disks 11 are mounted on shaft12,that is journaled in bearings 13, formed on shank 14.

Said shank is laterally adjustable on the frame and also in differentvertical angles. Joint 15 in the shank provides for theadj ustment ofshaft 12 in different horizontal angles.A

For the purpose of facilitating the casting of the members of the shankthe serrations are omitted from the contiguous surfaces that form joint15, and similar disk plates 16 and 17, each formed with radial teeth orserrations on one side to register with the other, are interposedbetween them. Lugs 18,formed on the edge of each of said disk plates,engage with corresponding notches 19, formed in the contiguous portionsof the shank. Studbolt 22, provided with nut 21, is secured in onemember of the shank and is arranged to securely fasten the other memberand the disk plates thereto and together to maintain shaft 12 inadjusted position to different horizontal angles.

Cross-bar 23 of the Yframe is preferabljT rectangular in cross-section,andthe opening in rectangular collar 24 corresponds in form to permit itto slide and to prevent it from turning thereon. The head ofclamping-bolt 25 is seated in'a countersunk hole formed in one side ofthe collar after being passed through larger hole 26, formed in theopposite side thereof. Circular plate 27 contains a rectangular openingfor the insertiontherein of co1- lar 24, and transverse seat'28, formedon one side of said plate, maintains itin proper sliding position on thecross-bar. The other side of the plate is formed with radial notches orserrations to register with and engage similar serrations formed on theside of circular head 29 of the shank. Nut 31 and the camwrench thereonserve to simultaneously secure the shank as adjusted indifferentpositions on the frame and in adjustment to different vertical angles.

The nuts on the clamping-bolts areformed with trunnions 33, Whereoncam-wrenches are swiveled. The jaws of the wrenches are wider than thelength of the nuts to form cams 34 to clamp the parts securely together.By turning the nuts with the wrenches the pressure of the cams may beregulated and any wear taken up.

Having fully described my improvement, what I claim as my invention, anddesire to secure by Letters Patent of the United States, 1s-

1. In a cultivator, the combination with the frame and the shank, of aplate interposed between them and formed with a rectangular opening, acollar movable laterally in the opening and arranged to slide on across-bar of the frame, and a clamping-bolt secured to the collar andarranged to 'clamp the parts together and to the frame.

2. In a cultivator, the combination with the fcross-bar of the frame anda shank adjustable thereon and in different vertical angles and formedwith serrations on one side of its head, of a plate interposed betweenthe shank and bar and formed with a rectangular opening and withserrations on one side to engage with the serrations on the shankandwith a seat on the other side to slidingly engage with the bar, acollar arranged to slide on the bar IOO 4. In a cultvator, the combinatn0f-a1 elamping-bolt, a threaded nut thereon., trunnons formed on thenut, and a wrench swiveled on the trunnions and formed with camshapedjaws that extend laterally beyond the lower end of the nut. ,v

JOHN F. SHEAHAN. W itnesses: v f

R. S. CARR, C. H. SCHELL.

